| A Numerical-analytic Method for Quickly Predicting Springback of Numerical Control Bending of Thin-walled Tube |
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| 作者姓名： | Mei ZHAN He YANG Liang HUANG |
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| 作者单位： | College of Materials Science and Engineering, Northwestern Polytechnical University, Xi＇an 710072, China |
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| 基金项目： | 国家自然科学基金，the Teaching and Research Award Program for Outstanding Young Teachers in Higher Education Institution of MOE;PRC，中国航空科学基金 |
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| 摘 要： | Springback is one of important factors influencing the forming quality of numerical control （NC） bending of thin-walled tube. In this paper, a numerical-analytic method for springback angle prediction of the process was put forward. The method is based on springback angle model derived using analytic method and simulation results from three-dimensional （3D） rigid-plastic finite element method （FEM）. The method is validated through comparison with experimental results. The features of the method are as follows： （1） The method is high in efficiency because it combines advantages of rigid-plastic FEM and analytic method. （2） The method is satisfactory in accuracy, since the field variables used in the model is resulting from 3D rigid-plastic FEM solution, and the effects both of axial force and strain neutral axis shift have been included. （3） Research on multi-factor effects can be carried out using the method due to its advantage inheriting from rigid-plastic FEM. The method described here is also of general significance to other bending processes.
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| 关 键 词： | 数控加工 薄壁管 数控弯曲 弹性后效 数字-解析法 场致发射显微镜 |
| 收稿时间： | 2005-04-06 |
| 修稿时间： | 2005-06-20 |
A Numerical-analytic Method for Quickly Predicting Springback of Numerical Control Bending of Thin-walled Tube |
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| Mei ZHAN He YANG Liang HUANG.A Numerical-analytic Method for Quickly Predicting Springback of Numerical Control Bending of Thin-walled Tube[J].Journal of Materials Science & Technology,2006,22(5):713-720. |
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| Authors: | Mei ZHAN He YANG Liang HUANG |
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| Affiliation: | College of Materials Science and Engineering, Northwestern Polytechnical University, Xi0an 710072, China |
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| Abstract: | Springback is one of important factors influencing the forming quality of. numerical control(NC)bending of thin-walled tube. In this paper, a numerical-analytic method for springback angle prediction of the process was put forward. The method is based on springback angle model derived using analytic method and simulation results from three-dimensional(3D)rigid-plastic finite element method(FEM). The method is validated through comparison with experimental results. The features of the method are as follows:(1)The method is high in efficiency because it combines advantages of rigid-plastic FEM and analytic method.(2)The method is satisfactory in accuracy, since the field variables used in the model is resulting from 3D rigid-plastic FEM solution, and the effects both of axial force and strain neutral axis shift have been included.(3)Research on multi-factor effects can be carried out using the method due to its advantage inheriting from rigid-plastic FEM. The method described here is also of general significance to other bending processes. |
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| Keywords: | Thin-walled tube Numerical control bending Springback Numerical-analytic method 3D rigid-plastic FEM |
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